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Proof of some conjectural congruences involving Apéry and Apéry-like numbers

Published online by Cambridge University Press:  07 March 2024

Guo-Shuai Mao
Affiliation:
Department of Mathematics, Nanjing University of Information Science and Technology, Nanjing, People’s Republic of China (maogsmath@163.com; 1282468588@qq.com)
Lilong Wang
Affiliation:
Department of Mathematics, Nanjing University of Information Science and Technology, Nanjing, People’s Republic of China (maogsmath@163.com; 1282468588@qq.com)

Abstract

In this paper, we mainly prove the following conjectures of Sun [16]: Let p > 3 be a prime. Then

\begin{align*}&A_{2p}\equiv A_2-\frac{1648}3p^3B_{p-3}\ ({\rm{mod}}\ p^4),\\&A_{2p-1}\equiv A_1+\frac{16p^3}3B_{p-3}\ ({\rm{mod}}\ p^4),\\&A_{3p}\equiv A_3-36738p^3B_{p-3}\ ({\rm{mod}}\ p^4),\end{align*}

where $A_n=\sum_{k=0}^n\binom{n}k^2\binom{n+k}{k}^2$ is the nth Apéry number, and Bn is the nth Bernoulli number.

Information

Type
Research Article
Copyright
© The Author(s), 2024. Published by Cambridge University Press on Behalf of The Edinburgh Mathematical Society

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